
Mod
Diffusion
About this game
Diffusion is a total-conversion mod in its own universe, based on Half-Life SDK and running on Xash3D FWGS engine.
You, James Smith (served in SWAT for a decade with no failed ops), on vacation and driving your car to some nice place, to take a break from your usual work routines. Driving on a deserted road somewhere in Utah, the car breaks down. With miles of nothing behind, J. decides to go forward and stumbles upon an abandoned rock/sand processing factory with just one yawning guard sitting there. Pointed by the guard, J. walks behind the factory to find the phone. When he comes back, he only sees two army trucks and the dead guard… J.'s curiosity leads him inside the factory only to find that this place is absolutely not what it seems to be…
Screenshots








Trailers & videos
Gameplay Trailer
Gameplay Video
Gameplay Video
Game facts
Release date
Nov 22, 2025
Platforms
PC (Microsoft Windows)
Genres
Shooter
Themes
Action, Science fiction
Game modes
Single player
Perspective
First person
Editions & related releases
More games to explore
Game data and artwork via IGDB.






